Osich said in an Instagram post that he injured his patella tendon two weeks into the 2016 season.

The injury might help explain why one of the most promising relievers struggled in 2016. After posting a 2.20 ERA in 35 games as a rookie in 2015, he slipped to 4.71 in 2016 and did not make postseason rosters.

Rookie gets call: Julio Urias, 20, will take the mound for the Dodgers on Wednesday, becoming the youngest starting pitcher in major-league postseason history.

“I felt the adrenaline when I was on the bench,” Urias, who is from Mexico, said through an interpreter. “I felt it in Washington, but then I knew that it was something that I could handle and something I could do. I know that I can do it again.”

Urias made his big-league debut May 27 against the Mets. At 19, he was the second teenager to start in the majors this century, joining Felix Hernandez, who was 19 in 2005. Urias is the youngest Dodgers pitcher to appear in a postseason game and the youngest on any team to pitch in the postseason since 1970.

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